Economic Community of Central African States (ECCAS) (It is an organisation for promotion of regional economic co-operation in Central Africa. It aims to achieve collective autonomy, raise the standard of living of its populations and maintain economic st是什么意思 Economic Community of Central African States (ECCAS) (It is an organisation for promotion of regional economic co-operation in Central Africa. It aims to achieve collective autonomy, raise the standard of living of its populations and maintain economic st怎么读